What is the function of a car generator?

[VonAvery]

The function of a car generator is to supply power to all electrical equipment except the starter when the engine is running normally, while also charging the battery. The principle of the generator is that the coil cuts the magnetic induction line to generate current, and the faster the coil speed, the greater the current and voltage. There is no permanent magnet in the car generator; the generator relies on the coil to generate a magnetic field. The rotor of the generator is the coil that generates the magnetic field. When the generator is running, the battery first supplies power to the rotor coil to generate a magnetic field, and then when the rotor rotates, it produces a rotating magnetic field and induces electricity in the stator coil. When the engine speed increases and the voltage rises, the voltage regulator disconnects the current to the rotor, and the rotor's magnetic field gradually weakens, preventing the voltage from rising further. When the generator is operating normally, in addition to supplying power to the electrical equipment, it also charges the battery to compensate for the power consumed during startup, ensuring that the battery has sufficient power for the next engine start.